Carburation system



Allg 21, 1934 J. c. STAFFORD ET AL 1,9705713 CARBURATION SYSTEM Filed Deo.. 28, 1932?l ATTORNEY.

Patented Aug. 21, 1934 l 1.910,11: cmm'non srsrsnr Jean C. Stafford, Justhcim, Salt signor to nid Jus (ilxio. and

Dayton. I. Lake City, Utah; laid Stafford theim Application December 28, 1932, Serial No. 649,148

' 14 cum. (ci. 'zel-wz) Our invention relates to fueling and carburation systems and has for its object to provide a carburetor and balanced suction tank which will draw the fuel from the main supply tank, into a I suction tank, from which the fuel is drawn in a vaporized form into a suction device and thence to the engine where it is consumed.

A further object is to provide a Carburation system which aerates the fuel in an auxiliary tank, introduces it into the suction device where it is further mixed with air and drawn into the intake manifold of an internal combustion engine.

A still further'object is to provide a'carbureting system which aerates the fuel in an auxiliary tank, draws direct fuel into the suction device for idling and starting, and draws direct fuel into the device through an adjustable high speed fuel jet when the engine has been accelerated.

These objects we accomplish with the device illustrated in the accompanying drawing in which similar numerals and letters of reference indicate like parts throughout the several views and as described in the specification forming a part of this application and pointed out in the appended claims.

In the drawing we have shown Figure l is a vertical section' through the entire device, without showing the main supply tank.

Figure 2 is a vertical section` of a modified form of suction device.

Figure 3 is a vertical section of a further moditied fumi ci suction device.

Figure is a cross section of a suction device showing various ways of distributing the suction drawing fuel in a vaporized form into the device, drawing idling fuel into the device and secondary fuel through another lead line.

chamber 1 preferably tangential to the curved wall 3. Also the diameter of the smallest portion 'of the chamber 2 is larger than the diameter of the smallest portion of the chamber 1. Enclosing 4 the open end of the chamber 2, is a closure plate 4,

having a boss 5 formed centrally thereon through which a poppet valve 6 is carried with ports -7 leading to the atmosphere and with a spring 8 normally holding the valve closed in its seat 9 on the bottom side of the plate 4. A throttle control valve 10 is mounted in the open end of the chamber 1 and the chamber 1 is then attached to the intake manifold of an internal combustion engine.

Through the juncture of the chamber 1 and the curved wall we then provide suction ports l1,

' which ports, .are controlled by al spring valve l2,

which is secured to the Aouter side of the body of the chamber. Surrounding the valve and ports we then provide an annular chamber 13, formed of ltwo portions secured together by flanges 14 and a bolt 15 passed therethrough. To this annular chamber we then provide a fuel supply line 16. of a diameter sulliclently large to carry aerated fuel to the annular chamber from the auxiliary tank B. An idling jet 17 leads from the bottom of the auxiliary tank B into the wall of the chamber 1 and up to the space within the annular chamber to provide raw fuel to the annular 'chamber 13 for idling and starting the motor. The auxiliary tank is set either adjacent the suction device or spaced therefrom as desired and a lead line 18 connects the tank B with the fuel supply tank (not shown). Into the end of the line 18 we provide a control valve 19 actuated to close the port 20 in the line 18 by the oat C which is pivotally mounted to' the end of the line 18. This controls the level of the fuel in the tank B. In the end of the tank B, we then provide an aerator D, consisting of a vertical pipe 22 with the top end open and having ports 23 through the bottom end thereof to allow the air drawn down through the pipe to be liberated in the fuel and said air to pass up through the fuel in bubbles, aerating the fusi and providing rich fuel vapors in the space above the fuel level in the tank E. A control bade 24 is mounted clown from the top of the tank to prevent the fuel from passing from the aeratcr into the line 16 in a raw state. Ports 25 are' provided through the baille to allow for free passage of air and vapors therethrough. Another baille plate 26 is mounted in the bottom of the tank to prevent excessive aeration from the aerator D affecting the float action. Ports 27 provide fuel passageways through thev plate to maintain an equal level of fuel vthroughout the entire tank B. A fuel jet 30 is mounted within the tank B with the lower end open to the fuel in the tank,- but controlled by a needle valve 3l, which valve is mounted from the top of the tank and is adiustable tocontrol the flow of fuel through the iet 30.' The top end 32 of the jet is bent and extends out of the tank B into the Iline 18 so that the suction 'of fuel therearound will createa suction through the jet and draw fuel from the tank. This jet may be so adjusted that it `will only draw raw fuel in the plate.

therethrough when the engine is operating at high speeds. The opening of the jet may be controlled to supply the correct amount of fuel for the various types of motors and the displacement thereof.

A balancing valve 34 is mounted through the 'top of the tank to open when suction through the line 16 is so great as to tend to create a vacuum in the tank B and also to provide a balance so that fuel will be drawn from the main supply tank through the line 18 by the suction in the tank -B, created from the suction through the line 16,

and the suction device A.

The valve 34 is mounted through a boss 35 in the top of the tank B and said 'valve controls a seat 36 controlling ports 3'7 leading to the atmosphere and aj spring 38 engaging a nut 39 on the top end of the valve stem 40 normally holds the valve closed'in its seat 36. 'Ihe nut provides for adjustment of the tensionof the spring to provide the opening of the valve when the suction within the tank reaches a certain degree.

In Figure 2, we have shown a modification in the valves and lines leading into the annular chamber 13. -In this section we have shown one section of the annular chamber divided by a baffle plate 41 with aI valve 42 to close the port 43 inthis section of the annular chamber 13. The jet 3o isshown in close proximity to the bame plate. A line 44 leads into the annular chamber on the opposite side with the line connected with a source of fuel supply in the tank B.

In Figure 3, we have shown the devicev as made of opposed frusto-conical chambers 46 and 47 joined by a curved wall 48 and with the line 44 leading into the annular chamber near one of the ports. The jet 30 being spaced farther from the baille plate. The top end of the chamber 4'1 is formed in a step 49 and then joins a chamber 50, the chamber 50 having its outer open end closed by a valve 51. This valve may be either manually controlled or may be spring controlled. f

Ports 53 are formed through the walls of the chamber 50 adjacent the step 49 and the suction of air passing thereover draws fuel from an annular chamber 54 surrounding the ports 53. `fllhe ports 53 may be controlled by spring valves 55 if necessary or may be entirely open to the interior of the chamber 54. A lead line 56 connects the chamber 54 with a source of fuel supply.

In Figure 4, we have shown the annular chamber divided into separate compartments or sectioned by partitions leaving three compartments 57, 58 and 59 with the one compartment 59 larger and connected to the auxiliary tank B by the line 16. Lines 60 and 61 connects the compartments 57 and 58 with the tank B.

'Ihe ports 62 through the suction device may be controlled by separate valves 63 or by valves covering a multiplicity of ports as shown by the valves 64 and 65.

In Figure 4 the section or compartment 59 may be made in one chamber or may be divided by a semi-circular baiiie plate 66 with ports 67 therethrough controlled by the valve 65. An idling port 68 allows a port which is not controlled anda low speed port 69 may be controlled by a valve 'l0 for variation of the amount of fuel passing from the compartment 59.

Irr Figure 5 we have shown the idling fuel jet leading into the port 11 instead of into the annular chamber as shown Figure 1.

A valve 42a controls the ports il' Having thus described our invention, we desire to secure by Letters Patent and claim 1. In a carburation system the combination of a suction device formed of opposed frusto-conical chambers joined by a curved wall, the curved Wall being tangential to the smaller diametered chamber, and with the smaller diametered chamber to -be secured to the intake manifold of an internal combustion engine; a closure for the larger diametered chamber carrying a spring controlled valve; ports through the juncture of the curved wall to the smaller diametered chamber; an annularchamber surrounding the ports; vsprings to control the opening of the ports depending upon the suction through the suction device; an auxlliary tank mounted adjacent the suction device; a lead line from the top of the tank to the annular chamber to create suction in the top of the tank and draw fuel vapors from the space above the fuel in the tank to the suction device; an aerator in said tank to aerate the fuel drawn through the line; a float mounted in the tank to control the level of fuel therein; a lead line to supply A,fuel from the main supply tank; an idling jet leading from the fuel in the tank to the space within the annular chamber; a high suction fuel jet mounted with the open end in the suction line leading from the annular chamber to the tank and with the other end in the fuel in the tank; a needle valve to control the flow of fuel through said jet; a valve to control the suction in the top of the auxiliary tank; baffle plates toprevent excessive aeration and excessive agitation in the fuel; and a throttle valve mounted in the end of the smaller diametered chamber adjacent the intake manifold, said valve to control the suction through the entire device.

2. I n a Carburation system the combination of a suction device and an auxiliary fuell tank; means to aerate fuel in the tank; means to introduce raw fuel into said suction device for idling and starting; means to draw raw fuel from said tank into said suction device for high speeds; means tocontrol the fuel level in said tank; means to create suction and balance in said tank from the suction device to draw fuel from a main supply tank; and springsto control the fuel entrances into the suction device.

- 3. In a carbureting system the combination of a suction device formed of opposed frusto-conical chambers joined by a curved wall; a valve in the end of the larger chamber; a throttle valve in the end of the smaller chamber to control the suction through the entire device; an annular chamber surrounding the curved wall section of the suction device; ports from the interior of the suction device into -the annular chamber; means to control the suction through said ports; an auxiliary ytank in open connection with the annular chamber; means to aerate the fuel in the tank; means to balance the suction and .pressure in the tank above the level of the fuel and draw fuel thereinto from a source of' control the suction through the entire device; an

annular chamber surrounding the curved wall section of the suction device; ports from the interior of the suction device into the annular chamber; means to control the suction through said ports; an auxiliary tank in open connection with the annular chamber; means to aerate the fuel in the tank; means to balance the suction and pressure in the tank above the level of the fuel and draw fuel thereinto from a source of supply; means to draw fuel into said annular chamber from the tank for idling and starting; and a jet actuated by increased suction to draw raw fuel into the annular chamber.

5. In -4a carburation system the combination of a suction device attached to the intake manifold ofgan internal combustion engine composed of opposed frusto-conical chambers joined by a curved wall; a spring controlled valve in the end of the larger diametered chamber; a throttle valve -in the end of the smaller diametered chamber adjacent the joint to the intake manifold of the engine; ports through the point of greatest constriction of the suction device; an annular chamber surrounding said ports; valve means to control said ports; means to connect said chamber with a source of fuel; means to introduce raw fuel into said annular chamber for idling and starting; means to introduceaerated fuel into said annular chamber; means to introduce raw fuel into said annular chamber when the engine is accelerated.

6. In a device for use on carburation suction devices, the combination of an annular ring; partitions in said ring; portsconnecting the interior of the suction device with the interior of the compartments made by the partitions; and lead lines from each compartment to a source offuelsupply.

7. In a device for use on suction devices of the class described, the combination of an annular ring; partitions dividing said rring into separate compartments; lead lines from each compartment to a source of fuel supply; a semi-circular bame, dividing one of said compartments; ports through said baille; ports connecting each compartment with the interior of the suction device; and valves to control such ports as desired.

8. Inf a device for use on carburation suction devices, thecombination of a suction device; an annular chamber formed -therearoundz partitions dividing the annular chamber into compartments; means to control ports connecting the interior of two such compartments with the suction device; ports connecting the third compartments with the interior of the suction device; a baille carried ink said third compartment vhaving ports therethrough; and means to control some of the ports in said baille as desired.

9. In a device of the class described the com- .bination of opposed frusto-conical chambers Joined by a curved wal1;a step at the open end of the larger diametered chamber joining this chamber to a parallel walled chamber; means to f control the flowof air through said chamber;

an annular chamber surrounding said step; ports leading from the annular chamber into the parallel walled chamber; means to draw fuel into said annularchamber; means to control partof said ports; an annular chamber surrounding the curved wall; ports into said chamber; means to control the flow of fuel through said ports; an idling port from a source of fuel leading into direct communication with one of said ports; and a valve mounted in said smaller diametered chamber to control the suction through the entire device. l

10. In a device of the class described the combination of .opposed frusta-conical chambers joined by a curved wall; a step at the open end of the larger diametered `chamber joining this chamber to a parallel walled chamber; means to control the flow of air through said chamber; an annular chamber surrounding said step; ports leading from the armular chamber into the parallel walled chamber; means to draw fuel into said annular chamber; means tocontrol part of said ports; an annular chamber surrounding the curved wall; ports into said chamber; means to control the ilow of fuel through said ports; an idling port from a source of fuel leading into direct communication with one of said ports.

11. In a device of the class described, the combination of' opposed frusto-conical chambers joined by a curved wall and having a parallel walled chamber on the outer chamber; a step joining the last chamber to the frusto-conical chambers; ports through the last chamber adjacent the step; an annular chamber surrounding said ports; means to connect the chamber with a source of fuel supply; means to control the flow of air and fuel through the entire device; an annular chamber surrounding the curved wall; ports leading into said chamber; and an idling port leading from the fuel supply into one n of said last mentioned ports.

12.` In a device of the class described the combination of opposed frusto-conical chambers joined by a curved wall; an annular chamber surrounding said curved wall; ports leading from the annular chamber into the interior of the device; means to control some of said ports; a baille dividing one portion of said annular chamber; ports through said baille; means to control the ports through said baule; a lead line .connecting the hauled portion of the annular chamber with a source of fuel supply; and a lead line into the annular chamber from a source of fuel supply. 4

13. In a carbureting system the combination of a suction device formed of opposed frusto-,conical chambers joined by a curved wall; a throttle valve in the Yend o f the device to control the suction through the entire device; an annular chamber surrounding the curved wall section of the suction device; ports from the interior of the suction device into the annular chamber; meansfto vcontrol the suction through said ports;

. an auxiliary tank in open connection with the said tank to balance the suction and pressure in los the tank above the level of the fuel; a jet actuated byincreased suction to draw raw fuel into the annular chamber; andan idling jet to introduce rawfuel from the tank into one of the ports in the suction device( 14.'In a carburation system the combination of opposed truste-conical chambers joined together by a curved wall; an annular chamber surrounding said curved wall section: ports through the point of greatest constriction; partitions in the annular chamberdividingitinto separate compartments; a semi-circular baille in one compartment; spring controlled ports through said baille; lead lines from each compartment to an auxiliary tank; means in the auxiliary tank to aerate fuel; means to introduce said aerated fuel into one of said compartments; and means to introduce raw fuel into one of the ports through the suction device from said tank for idling and starting. Y

JEAN C. STAFFORD.

CLARENCE I. JUSTHEIM. 

